212 BULLETIN DK L'HERBIER BOISSIER. (42) 



MS. Vesicularia thermalis n. sp.; caulis fluitans tenuis filiformis 

 viridis irregula riter pinnatus; folia minuta in axi crasso remota, e 

 basi angustiore rotundato-ovata, acumine brevi semitorlo termi- 

 na ta, in legerrima caviuscula carnosula enervia, e cellulis majusculis 

 laxis viridibus utriculo primordiali repletis reticulata. Ca3tera nulla. 



Habitatio. Alta Vera Paz, in truncis submersis in aqua 17° R. prope Cubil- 

 guilz : H. v. Türckheim in Hb. Levier. 



M6. Plagiothecium longisetulum n. sp.; cespites teneri virides 

 intricali virides; caulis repens tenuis, ramis brevibus teneris plu- 

 mose foliosis pinnatim divisus; folia laxe disposita patenli-patula 

 pallida, e basi angustiore breviter fibrosa enervi in laminam 

 anguste oblongam stricte acuminatam acuta tarn producta integer- 

 rima, e cellulis angustissimis longiusculis densiusculis reticulata; 

 perichsetialia in subulam elongatam flexuosam protracta; omnia 

 flaccidula; theca in pedunculo elongato flavo flexuoso tenui incli- 

 nata parva tumide ovata siccitate sub orecoarctata, operculo minuto 

 conico aculo; exostomii dentés valde introrsum incurvati rubiginosi 

 robustiusculi obscuri, endostomii erecti aurantiaci carinati, ciliolis 

 capillaribus singulis interpositis. 



Habitatio. Ad arboris juvenilis corticem glabrum prope Coban, 4400 ped. 

 alt. ; in terra paludosa in Chicogonito pr. Coban; Decembri 1883 : H. v. Türck- 

 heim. Hb. Levier. 



117. Aptychus apaloblastus n. sp. ; caulis repens, ramis bre- 

 vibus vix pollicaribus simplicibus vel parce ramulosis curvatis 

 viridi-lutescentibus ; folia caulina densiuscule imbricata madore 

 patula parva, e basi angustiore constricta cellulis alaribus amplius- 

 cule vesiculosis paucis thryseis ornata in laminam oblongam mar- 

 gine valde révolu Lam acumine brevi robustiusculo sequali termi- 

 nalam producta concava enervia, e cellulis ellipticis pro more pellu- 

 cidis areolala ; perichsetialia minora magis acuminata ; theca in 

 pedunculo breviusculo rubente flexuoso inclina ta, e collo brevi obco- 

 nica parva vel siccitate amblystegioideo-curvata, aperculo conico- 

 subulato. 



Habitatio. Pansamalâ, 3800 ped. altus, Januario 1886 : v. Türckheim in 

 Hb. Brotheri. 



Inter Aptychum semitortulum et A. longicollem sedem tenens, a priore 

 foliis plano-acuminatis_. ab ulteriore foliis nee vesiculose tumidis jam differt. 



